NH-3807 - Include some DriverTest fixtures again.

Also document why tests are excluded in the .csproj file.

Author: ngbrown

src/NHibernate.Test/DriverTest/DbProviderFactoryDriveConnectionCommandProviderTest.cs

@@ -1,3 +1,4 @@
+#if !NETCOREAPP2_0
 using System;
 using System.Data.Common;
 using NHibernate.Driver;
@@ -35,4 +36,5 @@ public void WhenCreatedWithDbFactoryThenCanReturnCommand()
 			}
 		}
 	}
-}
+}
+#endif

src/NHibernate.Test/DriverTest/OracleClientDriverFixture.cs

@@ -1,3 +1,4 @@
+#if !NETCOREAPP2_0
 using System;
 using System.Data.Common;
 using NHibernate.Driver;
@@ -35,4 +36,5 @@ public void CommandClassName()
 			Assert.AreEqual("System.Data.OracleClient.OracleCommand", cmd.GetType().FullName);
 		}
 	}
-}
+}
+#endif

src/NHibernate.Test/DriverTest/OracleDataClientDriverFixture.cs

@@ -1,3 +1,4 @@
+#if !NETCOREAPP2_0
 using System;
 using System.Data;
 using System.Data.Common;
@@ -34,4 +35,5 @@ public void NoBooleanParameters()
 			Assert.IsFalse(param.DbType == DbType.Boolean, "should not still be a DbType.Boolean");
 		}
 	}
-}
+}
+#endif

src/NHibernate.Test/DriverTest/ReflectionBasedDriverTest.cs

@@ -1,3 +1,4 @@
+#if !NETCOREAPP2_0
 using System;
 using NHibernate.Driver;
 using NUnit.Framework;
@@ -114,4 +115,5 @@ public void WhenCreatedNoWithDbFactoryThenCanReturnCommand()
 			}
 		}
 	}
-}
+}
+#endif

src/NHibernate.Test/ExceptionsTest/OracleClientExceptionConverterExample.cs

@@ -1,3 +1,4 @@
+#if !NETCOREAPP2_0
 using System;
 using System.Data.OracleClient;
 using NHibernate.Exceptions;
@@ -27,4 +28,5 @@ public Exception Convert(AdoExceptionContextInfo exInfo)
 
 		#endregion
 	}
-}
+}
+#endif

src/NHibernate.Test/NHibernate.Test.csproj

@@ -16,20 +16,17 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'netcoreapp2.0'">
-    <Compile Remove="DriverTest\**" />
     <Compile Remove="NHSpecificTest\DtcFailures\**" /> <!--Distributed-->
-    <Compile Remove="NHSpecificTest\NH2188\**" />
+    <Compile Remove="NHSpecificTest\NH2188\**" /> <!--Uses AppDomain.CurrentDomain.SetupInformation-->
     <Compile Remove="NHSpecificTest\NH2420\**" /> <!--Distributed-->
-    <Compile Remove="NHSpecificTest\NH2484\**" />
-    <Compile Remove="NHSpecificTest\NH2985\**" />
-    <Compile Remove="NHSpecificTest\NH3121\**" />
-    <Compile Remove="SqlTest\Custom\Oracle\**" />
-    <Compile Remove="CfgTest\DefaultNsAssmFixture.cs" />
-    <Compile Remove="CfgTest\HbmOrderingFixture.cs" />
-    <Compile Remove="DynamicProxyTests\PeVerifier.cs" />
-    <Compile Remove="DynamicProxyTests\PeVerifyFixture.cs" />
-    <Compile Remove="ExceptionsTest\OracleClientExceptionConverterExample.cs" />
-    <Compile Remove="ExceptionsTest\PostgresExceptionConverterExample.cs" />
+    <Compile Remove="NHSpecificTest\NH2484\**" /> <!--Uses Image type-->
+    <Compile Remove="NHSpecificTest\NH2985\**" /> <!--Uses Bitmap type-->
+    <Compile Remove="NHSpecificTest\NH3121\**" /> <!--Uses Image type-->
+    <Compile Remove="SqlTest\Custom\Oracle\**" /> <!--No Oracle driver-->
+    <Compile Remove="CfgTest\DefaultNsAssmFixture.cs" /> <!--Uses DefineDynamicAssembly-->
+    <Compile Remove="CfgTest\HbmOrderingFixture.cs" /> <!--Uses DefineDynamicAssembly-->
+    <Compile Remove="DynamicProxyTests\PeVerifier.cs" /> <!--Only for dynamic assemblies-->
+    <Compile Remove="DynamicProxyTests\PeVerifyFixture.cs" /> <!--Uses appDomain.DefineDynamicAssembly-->
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net461'">